This is a very ironic one! The big white circle with the black point in the middle symbolises an eye. However, the other small circles are the signs for the language for blind people. But blind people cannot read the graffiti because the signs are not engraved in the wall and conversely, normally people cannot read the braille. The graffiti work is made by „Ljvant“ or also named „L.J. van Tuinen“ or „LJ van T“, an autonome artist. Many photos of his art works and some information can be found online.